Smoke purifier and consumer



(No Model.)

J. BUTLER. SMOKE PURIFIER AND CONSUMER.

No. 494,522. Patented Mar. 28,v 1893.

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NITED STATES PATENT OFFICE.

JOHN BUTLER, OF ELLSWORTH, MINNESOTA.

SMOKE PURIFIER AND CONSUMER.

SPECIFICATION forming part of Letters Patent No. 494,522, dated March28, 1893.

Application filed January l2. 1893. SerialNo. 458.156. (No model.)

To all whom. t may concern.-

Be it known that I, JOHN BUTLER, a citizen ot' the United States,residing at Ellsworth, in the county of Nobles and State of Minnesota,have invented certain new and useful Improvements in Smoke Purifiers andConsumers, of which the following is a specification.

The subject of the present invention is an apparatus, designed to beassociated with a furnace of any construction, which apparatus isadapted to exhaust the products of combustion from the furnace anddispose of them either by returning them directly to the cornbustionchamber, or else by forcing them beneath the surface of abody of liquidby which some of them are arrested and through which the balance rise,freed from impurities, after which they may be either allowed to escapeinto the atmosphere, or else returned to the combustion chamber.

The invention consists in certain features of novelty that areparticularly pointed out in the claims hereinafter, and in order that itmay be fully understood, I will describe it with reference to theaccompanying drawings which are made a part hereof and in which- Figure1, is a vertical longitudinal section of a boiler and furnace offamiliar construction and a sectional elevation of the improved smokepurifier and consumer in its preferred form. Fig. 2 is a plan view ofthe exhaust apparatus shown in Fig. l. Fig. 3, is a vertical transversesection of the fire-box on the line 3-3.

A represents the fire-box, B the grate, C the bridge-wall, D the boiler,E and F smoke passages at the ends of the boiler, G a horizontalpartition dividing the passage E into two parts, and H the smoke pipecommunicating with the upper part of said passage E. All of these partsmay beV of any desired construction, the construction shown in thedrawings being selected at random and without any intention that theinvention shall be considered as limited thereto.

One of the essential features of the invention is an apparatus forcreating a suction in one of the smoke passages and thereby producing aforced draft through the furnace, but I desire to have it understoodthat the invention is not limited to an apparatus, for this purpose, ofany particular construction. On

the contrary, said invention comprehends any suitable apparatus. In thedrawings I have shown this apparatus as consisting of a pump havingdouble cylinders 1,1 and reciprocable suitable fittings with a pipe N,whose connec-f-,

tions are described farther on.

In the forms of the invention shown by Fig. I, two branch pipes N and N2lead off from the pipe N. The branch N is provided with a hand-valve 'n'and the branch N2 is provided with a hand-valve n2. In the preferredform of the invention the branch N enters an airtight tank O, its endcommunicating with the interior of the tank near the bottom thereof. Thebranch N2 extends to the fire-box where it is again branched, its twobranches N21L terminating above the grate and on opposite sides of thefire-box, so that they discharge in opposite directions across thefire-box. The discharge end of each of these branches is located in theinner end of a iiue a, the outer end of which is in open communicationwith the external atmosphere, as shown by dotted lines in Fig. l. v

Pis a pipe having a hand-valve p and communicating at one end with theupper portion of the tank O and at the other with the branch pipe N2,between the hand-valve n2 and the fire-box.

Q is a pipe having a hand-valve q and communicating at one end with theupper part of the tank O and at the other end with the If the valve a isclosed and the f IOO other hand, the valves n2 and q are closedand thevalves n and p are open, the products of combustion will be forced intothe tank O, below the surface of the body of Water or other liquidcontained therein. Some of the said products will be arrested by theliquid and the balance will rise through the liquid, by reason of theirless specific gravity, and. will pass through pipe P into the pipe N2and thence to the fire-box, as already described. Again, if the valvesn2 and p be closed and the valves fa and q open, the products ofcombustion will be forced beneath the surface of the liquid as before,andthose that rise through said liquid, freed from impurities, will passthrough pipe O into the smoke-pipe H, above the damper h, and thenceolf.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a furnace, of an exhaust apparatus, meansconnecting its induction port with one of the smoke-fines, the pipe Ncommunicating with its educton port, the closed reservoir O having abody of liquid therein, the branch pipe N having valve n andcommunicating with the interior of the reservoir below the surface ofthe liquid therein, the branch pipe N2having the valve n2, andcommunicating with the combustion chamber, and the pipel? having valve pand cornmuni eatin g at one end with the reservoir, above the 'surfaceof the liquid therein and at the other with the branch pipe N2 betweenthe valve n2 and the combustion chamber, substantially as set forth.

2. The combination with a furnace, of an exhaust apparatus, meansconnecting its induction port with one of the smoke iiues of thefurnace, the pipe N communicating with its eduction port, the closedreservoir O having a body of liquid therein, the branch pipe N havingValve n and communicating with the interior of the reservoir below thesurface of the liquid therein, the branch pipe N2 having valve n2 andcommunicating with the combustion chamber, the pipe P having valve p andcommunicating at one end with the reservoir above the surface of theliquid therein and at the other with the branch pipe N2 between thevalve 'n2 and the combustion chamber, and the pipo Q having valve q andco1n municating at one end with the reservoir above the surface of thewater therein, and at the other with the atmosphere, substantially asset forth.

JOI-1N BUTLER. lVitnesses:

L. M. HOPKINS, JAMES MAHER.

